An article from the Journal of Public Transportation, published in November 2009, outlines the history of bike-sharing programs from the first generation programs to present day third generation programs – a progression involving increasing ease of use, implementation, and maintenance. The article, “,” includes a detailed examination of models of provision, a discussion of the benefits and detriments of each, and a description of capital and operating costs. The paper concludes with a look into the future of what a fourth generation bike-sharing program could be.